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Finding the Fourth Proportional to 549,659.28, 758,357.64 and 307,909.20

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Solution

The fourth proportional to 549,659.28, 758,357.64 and 307,909.20 is: 424,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,659.28 : 758,357.64 = 307,909.20 : x
  2. Step 2: Convert to fraction form
    549,659.28/758,357.64 = 307,909.20/x
  3. Step 3: Cross multiply
    549,659.28x = 758,357.64 × 307,909.20
  4. Step 4: Simplify right side
    549,659.28x = 233,505,294,246.29
  5. Step 5: Solve for x
    x = 233,505,294,246.29/549,659.28
  6. Step 6: Final answer
    x = 424,818.25

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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.