Home / 400,907.20-553,126.08-231,117.76

Finding the Fourth Proportional to 400,907.20, 553,126.08 and 231,117.76

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Solution

The fourth proportional to 400,907.20, 553,126.08 and 231,117.76 is: 318,869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,907.20 : 553,126.08 = 231,117.76 : x
  2. Step 2: Convert to fraction form
    400,907.20/553,126.08 = 231,117.76/x
  3. Step 3: Cross multiply
    400,907.20x = 553,126.08 × 231,117.76
  4. Step 4: Simplify right side
    400,907.20x = 127,837,260,607.18
  5. Step 5: Solve for x
    x = 127,837,260,607.18/400,907.20
  6. Step 6: Final answer
    x = 318,869.95

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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.