Home / 282,721.83-390,158.74-153,660.65

Finding the Fourth Proportional to 282,721.83, 390,158.74 and 153,660.65

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Solution

The fourth proportional to 282,721.83, 390,158.74 and 153,660.65 is: 212,053.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,721.83 : 390,158.74 = 153,660.65 : x
  2. Step 2: Convert to fraction form
    282,721.83/390,158.74 = 153,660.65/x
  3. Step 3: Cross multiply
    282,721.83x = 390,158.74 × 153,660.65
  4. Step 4: Simplify right side
    282,721.83x = 59,952,043,832.86
  5. Step 5: Solve for x
    x = 59,952,043,832.86/282,721.83
  6. Step 6: Final answer
    x = 212,053.11

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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.