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Finding the Fourth Proportional to 521,509.80, 782,264.70 and 166,535.40

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Solution

The fourth proportional to 521,509.80, 782,264.70 and 166,535.40 is: 249,803.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,509.80 : 782,264.70 = 166,535.40 : x
  2. Step 2: Convert to fraction form
    521,509.80/782,264.70 = 166,535.40/x
  3. Step 3: Cross multiply
    521,509.80x = 782,264.70 × 166,535.40
  4. Step 4: Simplify right side
    521,509.80x = 130,274,764,720.38
  5. Step 5: Solve for x
    x = 130,274,764,720.38/521,509.80
  6. Step 6: Final answer
    x = 249,803.10

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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.