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Finding the Fourth Proportional to 144,420.80, 216,242.40 and 144,420.80

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Solution

The fourth proportional to 144,420.80, 216,242.40 and 144,420.80 is: 216,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,420.80 : 216,242.40 = 144,420.80 : x
  2. Step 2: Convert to fraction form
    144,420.80/216,242.40 = 144,420.80/x
  3. Step 3: Cross multiply
    144,420.80x = 216,242.40 × 144,420.80
  4. Step 4: Simplify right side
    144,420.80x = 31,229,900,401.92
  5. Step 5: Solve for x
    x = 31,229,900,401.92/144,420.80
  6. Step 6: Final answer
    x = 216,242.40

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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.