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Finding the Fourth Proportional to 459,053.60, 688,580.40 and 210,221.60

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Solution

The fourth proportional to 459,053.60, 688,580.40 and 210,221.60 is: 315,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,053.60 : 688,580.40 = 210,221.60 : x
  2. Step 2: Convert to fraction form
    459,053.60/688,580.40 = 210,221.60/x
  3. Step 3: Cross multiply
    459,053.60x = 688,580.40 × 210,221.60
  4. Step 4: Simplify right side
    459,053.60x = 144,754,473,416.64
  5. Step 5: Solve for x
    x = 144,754,473,416.64/459,053.60
  6. Step 6: Final answer
    x = 315,332.40

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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.