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Finding the Fourth Proportional to 499,139.35, 748,750.55 and 162,172.54

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Solution

The fourth proportional to 499,139.35, 748,750.55 and 162,172.54 is: 243,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,139.35 : 748,750.55 = 162,172.54 : x
  2. Step 2: Convert to fraction form
    499,139.35/748,750.55 = 162,172.54/x
  3. Step 3: Cross multiply
    499,139.35x = 748,750.55 × 162,172.54
  4. Step 4: Simplify right side
    499,139.35x = 121,426,779,925.96
  5. Step 5: Solve for x
    x = 121,426,779,925.96/499,139.35
  6. Step 6: Final answer
    x = 243,272.30

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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.