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Finding the Fourth Proportional to 549,402.48, 758,139.33 and 307,629.63

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Solution

The fourth proportional to 549,402.48, 758,139.33 and 307,629.63 is: 424,508.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,402.48 : 758,139.33 = 307,629.63 : x
  2. Step 2: Convert to fraction form
    549,402.48/758,139.33 = 307,629.63/x
  3. Step 3: Cross multiply
    549,402.48x = 758,139.33 × 307,629.63
  4. Step 4: Simplify right side
    549,402.48x = 233,226,121,576.35
  5. Step 5: Solve for x
    x = 233,226,121,576.35/549,402.48
  6. Step 6: Final answer
    x = 424,508.68

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1.5x scale

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.