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Finding the Fourth Proportional to 188,428.40, 282,610.20 and 70,038.80

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Solution

The fourth proportional to 188,428.40, 282,610.20 and 70,038.80 is: 105,046.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,428.40 : 282,610.20 = 70,038.80 : x
  2. Step 2: Convert to fraction form
    188,428.40/282,610.20 = 70,038.80/x
  3. Step 3: Cross multiply
    188,428.40x = 282,610.20 × 70,038.80
  4. Step 4: Simplify right side
    188,428.40x = 19,793,679,275.76
  5. Step 5: Solve for x
    x = 19,793,679,275.76/188,428.40
  6. Step 6: Final answer
    x = 105,046.16

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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.