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Finding the Fourth Proportional to 145,870.20, 218,805.30 and 144,948.60

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Solution

The fourth proportional to 145,870.20, 218,805.30 and 144,948.60 is: 217,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,870.20 : 218,805.30 = 144,948.60 : x
  2. Step 2: Convert to fraction form
    145,870.20/218,805.30 = 144,948.60/x
  3. Step 3: Cross multiply
    145,870.20x = 218,805.30 × 144,948.60
  4. Step 4: Simplify right side
    145,870.20x = 31,715,521,907.58
  5. Step 5: Solve for x
    x = 31,715,521,907.58/145,870.20
  6. Step 6: Final answer
    x = 217,422.90

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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.