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Finding the Fourth Proportional to 292,354.40, 438,562.64 and 92,703.20

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Solution

The fourth proportional to 292,354.40, 438,562.64 and 92,703.20 is: 139,064.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,354.40 : 438,562.64 = 92,703.20 : x
  2. Step 2: Convert to fraction form
    292,354.40/438,562.64 = 92,703.20/x
  3. Step 3: Cross multiply
    292,354.40x = 438,562.64 × 92,703.20
  4. Step 4: Simplify right side
    292,354.40x = 40,656,160,128.45
  5. Step 5: Solve for x
    x = 40,656,160,128.45/292,354.40
  6. Step 6: Final answer
    x = 139,064.64

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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.