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Finding the Fourth Proportional to 475,283.20, 712,924.80 and 142,859.20

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Solution

The fourth proportional to 475,283.20, 712,924.80 and 142,859.20 is: 214,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,283.20 : 712,924.80 = 142,859.20 : x
  2. Step 2: Convert to fraction form
    475,283.20/712,924.80 = 142,859.20/x
  3. Step 3: Cross multiply
    475,283.20x = 712,924.80 × 142,859.20
  4. Step 4: Simplify right side
    475,283.20x = 101,847,866,588.16
  5. Step 5: Solve for x
    x = 101,847,866,588.16/475,283.20
  6. Step 6: Final answer
    x = 214,288.80

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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.