Home / 467,938.70-645,755.40-253,078.76

Finding the Fourth Proportional to 467,938.70, 645,755.40 and 253,078.76

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Solution

The fourth proportional to 467,938.70, 645,755.40 and 253,078.76 is: 349,248.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,938.70 : 645,755.40 = 253,078.76 : x
  2. Step 2: Convert to fraction form
    467,938.70/645,755.40 = 253,078.76/x
  3. Step 3: Cross multiply
    467,938.70x = 645,755.40 × 253,078.76
  4. Step 4: Simplify right side
    467,938.70x = 163,426,975,895.30
  5. Step 5: Solve for x
    x = 163,426,975,895.30/467,938.70
  6. Step 6: Final answer
    x = 349,248.69

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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.