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Finding the Fourth Proportional to 155,641.98, 216,235.96 and 153,775.74

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Solution

The fourth proportional to 155,641.98, 216,235.96 and 153,775.74 is: 213,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,641.98 : 216,235.96 = 153,775.74 : x
  2. Step 2: Convert to fraction form
    155,641.98/216,235.96 = 153,775.74/x
  3. Step 3: Cross multiply
    155,641.98x = 216,235.96 × 153,775.74
  4. Step 4: Simplify right side
    155,641.98x = 33,251,844,763.61
  5. Step 5: Solve for x
    x = 33,251,844,763.61/155,641.98
  6. Step 6: Final answer
    x = 213,643.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.