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Finding the Fourth Proportional to 144,428.80, 216,643.20 and 97,189.60

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Solution

The fourth proportional to 144,428.80, 216,643.20 and 97,189.60 is: 145,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,428.80 : 216,643.20 = 97,189.60 : x
  2. Step 2: Convert to fraction form
    144,428.80/216,643.20 = 97,189.60/x
  3. Step 3: Cross multiply
    144,428.80x = 216,643.20 × 97,189.60
  4. Step 4: Simplify right side
    144,428.80x = 21,055,465,950.72
  5. Step 5: Solve for x
    x = 21,055,465,950.72/144,428.80
  6. Step 6: Final answer
    x = 145,784.40

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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.