Home / 290,221,399.78-400,533,821.13-216,754,995.94

Finding the Fourth Proportional to 290,221,399.78, 400,533,821.13 and 216,754,995.94

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Solution

The fourth proportional to 290,221,399.78, 400,533,821.13 and 216,754,995.94 is: 299,143,022.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,221,399.78 : 400,533,821.13 = 216,754,995.94 : x
  2. Step 2: Convert to fraction form
    290,221,399.78/400,533,821.13 = 216,754,995.94/x
  3. Step 3: Cross multiply
    290,221,399.78x = 400,533,821.13 × 216,754,995.94
  4. Step 4: Simplify right side
    290,221,399.78x = 86,817,706,772,865,840
  5. Step 5: Solve for x
    x = 86,817,706,772,865,840/290,221,399.78
  6. Step 6: Final answer
    x = 299,143,022.67

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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.