Home / 287,142.95-430,810.33-127,197.15

Finding the Fourth Proportional to 287,142.95, 430,810.33 and 127,197.15

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Solution

The fourth proportional to 287,142.95, 430,810.33 and 127,197.15 is: 190,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,142.95 : 430,810.33 = 127,197.15 : x
  2. Step 2: Convert to fraction form
    287,142.95/430,810.33 = 127,197.15/x
  3. Step 3: Cross multiply
    287,142.95x = 430,810.33 × 127,197.15
  4. Step 4: Simplify right side
    287,142.95x = 54,797,845,848.57
  5. Step 5: Solve for x
    x = 54,797,845,848.57/287,142.95
  6. Step 6: Final answer
    x = 190,838.21

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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.