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Finding the Fourth Proportional to 352,254.40, 528,421.68 and 127,720.58

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Solution

The fourth proportional to 352,254.40, 528,421.68 and 127,720.58 is: 191,595.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,254.40 : 528,421.68 = 127,720.58 : x
  2. Step 2: Convert to fraction form
    352,254.40/528,421.68 = 127,720.58/x
  3. Step 3: Cross multiply
    352,254.40x = 528,421.68 × 127,720.58
  4. Step 4: Simplify right side
    352,254.40x = 67,490,323,454.17
  5. Step 5: Solve for x
    x = 67,490,323,454.17/352,254.40
  6. Step 6: Final answer
    x = 191,595.40

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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.