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Finding the Fourth Proportional to 549,594, 758,439.72 and 311,130

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Solution

The fourth proportional to 549,594, 758,439.72 and 311,130 is: 429,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,594 : 758,439.72 = 311,130 : x
  2. Step 2: Convert to fraction form
    549,594/758,439.72 = 311,130/x
  3. Step 3: Cross multiply
    549,594x = 758,439.72 × 311,130
  4. Step 4: Simplify right side
    549,594x = 235,973,350,083.60
  5. Step 5: Solve for x
    x = 235,973,350,083.60/549,594
  6. Step 6: Final answer
    x = 429,359.40

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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.