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Finding the Fourth Proportional to 142,322.40, 213,520.56 and 42,482.60

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Solution

The fourth proportional to 142,322.40, 213,520.56 and 42,482.60 is: 63,734.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,322.40 : 213,520.56 = 42,482.60 : x
  2. Step 2: Convert to fraction form
    142,322.40/213,520.56 = 42,482.60/x
  3. Step 3: Cross multiply
    142,322.40x = 213,520.56 × 42,482.60
  4. Step 4: Simplify right side
    142,322.40x = 9,070,908,542.26
  5. Step 5: Solve for x
    x = 9,070,908,542.26/142,322.40
  6. Step 6: Final answer
    x = 63,734.93

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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.