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Finding the Fourth Proportional to 458,881.70, 688,322.55 and 299,449.40

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Solution

The fourth proportional to 458,881.70, 688,322.55 and 299,449.40 is: 449,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,881.70 : 688,322.55 = 299,449.40 : x
  2. Step 2: Convert to fraction form
    458,881.70/688,322.55 = 299,449.40/x
  3. Step 3: Cross multiply
    458,881.70x = 688,322.55 × 299,449.40
  4. Step 4: Simplify right side
    458,881.70x = 206,117,774,603.97
  5. Step 5: Solve for x
    x = 206,117,774,603.97/458,881.70
  6. Step 6: Final answer
    x = 449,174.10

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Similar ratio
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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.