Home / 290,221,415.28-400,533,842.52-216,755,011.44

Finding the Fourth Proportional to 290,221,415.28, 400,533,842.52 and 216,755,011.44

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Solution

The fourth proportional to 290,221,415.28, 400,533,842.52 and 216,755,011.44 is: 299,143,044.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,221,415.28 : 400,533,842.52 = 216,755,011.44 : x
  2. Step 2: Convert to fraction form
    290,221,415.28/400,533,842.52 = 216,755,011.44/x
  3. Step 3: Cross multiply
    290,221,415.28x = 400,533,842.52 × 216,755,011.44
  4. Step 4: Simplify right side
    290,221,415.28x = 86,817,717,617,529,760
  5. Step 5: Solve for x
    x = 86,817,717,617,529,760/290,221,415.28
  6. Step 6: Final answer
    x = 299,143,044.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.