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Finding the Fourth Proportional to 418,637.60, 577,735.08 and 239,824.16

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Solution

The fourth proportional to 418,637.60, 577,735.08 and 239,824.16 is: 330,966.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,637.60 : 577,735.08 = 239,824.16 : x
  2. Step 2: Convert to fraction form
    418,637.60/577,735.08 = 239,824.16/x
  3. Step 3: Cross multiply
    418,637.60x = 577,735.08 × 239,824.16
  4. Step 4: Simplify right side
    418,637.60x = 138,554,830,263.53
  5. Step 5: Solve for x
    x = 138,554,830,263.53/418,637.60
  6. Step 6: Final answer
    x = 330,966.04

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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.