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Finding the Fourth Proportional to 549,649.57, 758,507.16 and 307,931.35

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Solution

The fourth proportional to 549,649.57, 758,507.16 and 307,931.35 is: 424,940.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,649.57 : 758,507.16 = 307,931.35 : x
  2. Step 2: Convert to fraction form
    549,649.57/758,507.16 = 307,931.35/x
  3. Step 3: Cross multiply
    549,649.57x = 758,507.16 × 307,931.35
  4. Step 4: Simplify right side
    549,649.57x = 233,568,133,763.47
  5. Step 5: Solve for x
    x = 233,568,133,763.47/549,649.57
  6. Step 6: Final answer
    x = 424,940.08

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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.