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Finding the Fourth Proportional to 147,328.40, 221,069.40 and 64,230.80

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Solution

The fourth proportional to 147,328.40, 221,069.40 and 64,230.80 is: 96,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,328.40 : 221,069.40 = 64,230.80 : x
  2. Step 2: Convert to fraction form
    147,328.40/221,069.40 = 64,230.80/x
  3. Step 3: Cross multiply
    147,328.40x = 221,069.40 × 64,230.80
  4. Step 4: Simplify right side
    147,328.40x = 14,199,464,417.52
  5. Step 5: Solve for x
    x = 14,199,464,417.52/147,328.40
  6. Step 6: Final answer
    x = 96,379.68

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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.