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Finding the Fourth Proportional to 265,572.96, 398,346.48 and 99,348

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Solution

The fourth proportional to 265,572.96, 398,346.48 and 99,348 is: 149,017.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,572.96 : 398,346.48 = 99,348 : x
  2. Step 2: Convert to fraction form
    265,572.96/398,346.48 = 99,348/x
  3. Step 3: Cross multiply
    265,572.96x = 398,346.48 × 99,348
  4. Step 4: Simplify right side
    265,572.96x = 39,574,926,095.04
  5. Step 5: Solve for x
    x = 39,574,926,095.04/265,572.96
  6. Step 6: Final answer
    x = 149,017.15

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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.