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Finding the Fourth Proportional to 290,425.14, 435,311.19 and 147,870.27

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Solution

The fourth proportional to 290,425.14, 435,311.19 and 147,870.27 is: 221,639.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,425.14 : 435,311.19 = 147,870.27 : x
  2. Step 2: Convert to fraction form
    290,425.14/435,311.19 = 147,870.27/x
  3. Step 3: Cross multiply
    290,425.14x = 435,311.19 × 147,870.27
  4. Step 4: Simplify right side
    290,425.14x = 64,369,583,199.32
  5. Step 5: Solve for x
    x = 64,369,583,199.32/290,425.14
  6. Step 6: Final answer
    x = 221,639.16

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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.