Home / 282,972.24-390,499.65-155,645.10

Finding the Fourth Proportional to 282,972.24, 390,499.65 and 155,645.10

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Solution

The fourth proportional to 282,972.24, 390,499.65 and 155,645.10 is: 214,789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,972.24 : 390,499.65 = 155,645.10 : x
  2. Step 2: Convert to fraction form
    282,972.24/390,499.65 = 155,645.10/x
  3. Step 3: Cross multiply
    282,972.24x = 390,499.65 × 155,645.10
  4. Step 4: Simplify right side
    282,972.24x = 60,779,357,074.22
  5. Step 5: Solve for x
    x = 60,779,357,074.22/282,972.24
  6. Step 6: Final answer
    x = 214,789.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.