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Finding the Fourth Proportional to 640,154.12, 960,374.08 and 240,798.20

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Solution

The fourth proportional to 640,154.12, 960,374.08 and 240,798.20 is: 361,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,154.12 : 960,374.08 = 240,798.20 : x
  2. Step 2: Convert to fraction form
    640,154.12/960,374.08 = 240,798.20/x
  3. Step 3: Cross multiply
    640,154.12x = 960,374.08 × 240,798.20
  4. Step 4: Simplify right side
    640,154.12x = 231,256,349,790.66
  5. Step 5: Solve for x
    x = 231,256,349,790.66/640,154.12
  6. Step 6: Final answer
    x = 361,251.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.