Home / 287,080.47-430,620.98-137,285.55

Finding the Fourth Proportional to 287,080.47, 430,620.98 and 137,285.55

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Solution

The fourth proportional to 287,080.47, 430,620.98 and 137,285.55 is: 205,928.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,080.47 : 430,620.98 = 137,285.55 : x
  2. Step 2: Convert to fraction form
    287,080.47/430,620.98 = 137,285.55/x
  3. Step 3: Cross multiply
    287,080.47x = 430,620.98 × 137,285.55
  4. Step 4: Simplify right side
    287,080.47x = 59,118,037,394.41
  5. Step 5: Solve for x
    x = 59,118,037,394.41/287,080.47
  6. Step 6: Final answer
    x = 205,928.45

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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.