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Finding the Fourth Proportional to 658,259.55, 987,423.54 and 209,015.63

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Solution

The fourth proportional to 658,259.55, 987,423.54 and 209,015.63 is: 313,534.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,259.55 : 987,423.54 = 209,015.63 : x
  2. Step 2: Convert to fraction form
    658,259.55/987,423.54 = 209,015.63/x
  3. Step 3: Cross multiply
    658,259.55x = 987,423.54 × 209,015.63
  4. Step 4: Simplify right side
    658,259.55x = 206,386,948,352.81
  5. Step 5: Solve for x
    x = 206,386,948,352.81/658,259.55
  6. Step 6: Final answer
    x = 313,534.30

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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.