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Finding the Fourth Proportional to 518,294.34, 715,258.02 and 288,875.22

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Solution

The fourth proportional to 518,294.34, 715,258.02 and 288,875.22 is: 398,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,294.34 : 715,258.02 = 288,875.22 : x
  2. Step 2: Convert to fraction form
    518,294.34/715,258.02 = 288,875.22/x
  3. Step 3: Cross multiply
    518,294.34x = 715,258.02 × 288,875.22
  4. Step 4: Simplify right side
    518,294.34x = 206,620,317,884.26
  5. Step 5: Solve for x
    x = 206,620,317,884.26/518,294.34
  6. Step 6: Final answer
    x = 398,654.40

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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.