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Finding the Fourth Proportional to 549,014.76, 757,674 and 307,312.38

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Solution

The fourth proportional to 549,014.76, 757,674 and 307,312.38 is: 424,109.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,014.76 : 757,674 = 307,312.38 : x
  2. Step 2: Convert to fraction form
    549,014.76/757,674 = 307,312.38/x
  3. Step 3: Cross multiply
    549,014.76x = 757,674 × 307,312.38
  4. Step 4: Simplify right side
    549,014.76x = 232,842,600,204.12
  5. Step 5: Solve for x
    x = 232,842,600,204.12/549,014.76
  6. Step 6: Final answer
    x = 424,109.91

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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.