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Finding the Fourth Proportional to 451,640.40, 623,218.86 and 260,715.30

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Solution

The fourth proportional to 451,640.40, 623,218.86 and 260,715.30 is: 359,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,640.40 : 623,218.86 = 260,715.30 : x
  2. Step 2: Convert to fraction form
    451,640.40/623,218.86 = 260,715.30/x
  3. Step 3: Cross multiply
    451,640.40x = 623,218.86 × 260,715.30
  4. Step 4: Simplify right side
    451,640.40x = 162,482,692,050.56
  5. Step 5: Solve for x
    x = 162,482,692,050.56/451,640.40
  6. Step 6: Final answer
    x = 359,761.20

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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.