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Finding the Fourth Proportional to 549,048.72, 758,160 and 345,439.08

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Solution

The fourth proportional to 549,048.72, 758,160 and 345,439.08 is: 477,003.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,048.72 : 758,160 = 345,439.08 : x
  2. Step 2: Convert to fraction form
    549,048.72/758,160 = 345,439.08/x
  3. Step 3: Cross multiply
    549,048.72x = 758,160 × 345,439.08
  4. Step 4: Simplify right side
    549,048.72x = 261,898,092,892.80
  5. Step 5: Solve for x
    x = 261,898,092,892.80/549,048.72
  6. Step 6: Final answer
    x = 477,003.38

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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.