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Finding the Fourth Proportional to 305,248.40, 457,872.60 and 260,147.60

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Solution

The fourth proportional to 305,248.40, 457,872.60 and 260,147.60 is: 390,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,248.40 : 457,872.60 = 260,147.60 : x
  2. Step 2: Convert to fraction form
    305,248.40/457,872.60 = 260,147.60/x
  3. Step 3: Cross multiply
    305,248.40x = 457,872.60 × 260,147.60
  4. Step 4: Simplify right side
    305,248.40x = 119,114,457,995.76
  5. Step 5: Solve for x
    x = 119,114,457,995.76/305,248.40
  6. Step 6: Final answer
    x = 390,221.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.