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Finding the Fourth Proportional to 398,600.58, 549,895.92 and 253,328.76

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Solution

The fourth proportional to 398,600.58, 549,895.92 and 253,328.76 is: 349,483.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,600.58 : 549,895.92 = 253,328.76 : x
  2. Step 2: Convert to fraction form
    398,600.58/549,895.92 = 253,328.76/x
  3. Step 3: Cross multiply
    398,600.58x = 549,895.92 × 253,328.76
  4. Step 4: Simplify right side
    398,600.58x = 139,304,451,542.66
  5. Step 5: Solve for x
    x = 139,304,451,542.66/398,600.58
  6. Step 6: Final answer
    x = 349,483.82

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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.