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Finding the Fourth Proportional to 518,564, 715,681.68 and 292,250.72

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Solution

The fourth proportional to 518,564, 715,681.68 and 292,250.72 is: 403,341.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,564 : 715,681.68 = 292,250.72 : x
  2. Step 2: Convert to fraction form
    518,564/715,681.68 = 292,250.72/x
  3. Step 3: Cross multiply
    518,564x = 715,681.68 × 292,250.72
  4. Step 4: Simplify right side
    518,564x = 209,158,486,270.81
  5. Step 5: Solve for x
    x = 209,158,486,270.81/518,564
  6. Step 6: Final answer
    x = 403,341.70

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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.