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Finding the Fourth Proportional to 459,905.60, 690,645.60 and 249,953.60

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Solution

The fourth proportional to 459,905.60, 690,645.60 and 249,953.60 is: 375,358.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,905.60 : 690,645.60 = 249,953.60 : x
  2. Step 2: Convert to fraction form
    459,905.60/690,645.60 = 249,953.60/x
  3. Step 3: Cross multiply
    459,905.60x = 690,645.60 × 249,953.60
  4. Step 4: Simplify right side
    459,905.60x = 172,629,354,044.16
  5. Step 5: Solve for x
    x = 172,629,354,044.16/459,905.60
  6. Step 6: Final answer
    x = 375,358.23

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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.