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Finding the Fourth Proportional to 367,931.64, 507,367.62 and 307,479.72

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Solution

The fourth proportional to 367,931.64, 507,367.62 and 307,479.72 is: 424,006.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,931.64 : 507,367.62 = 307,479.72 : x
  2. Step 2: Convert to fraction form
    367,931.64/507,367.62 = 307,479.72/x
  3. Step 3: Cross multiply
    367,931.64x = 507,367.62 × 307,479.72
  4. Step 4: Simplify right side
    367,931.64x = 156,005,253,734.67
  5. Step 5: Solve for x
    x = 156,005,253,734.67/367,931.64
  6. Step 6: Final answer
    x = 424,006.08

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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.