Home / 457,815.60-686,827.80-142,304.40

Finding the Fourth Proportional to 457,815.60, 686,827.80 and 142,304.40

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Solution

The fourth proportional to 457,815.60, 686,827.80 and 142,304.40 is: 213,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,815.60 : 686,827.80 = 142,304.40 : x
  2. Step 2: Convert to fraction form
    457,815.60/686,827.80 = 142,304.40/x
  3. Step 3: Cross multiply
    457,815.60x = 686,827.80 × 142,304.40
  4. Step 4: Simplify right side
    457,815.60x = 97,738,617,982.32
  5. Step 5: Solve for x
    x = 97,738,617,982.32/457,815.60
  6. Step 6: Final answer
    x = 213,489.05

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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.