Home / 282,719.12-390,155.36-153,657.56

Finding the Fourth Proportional to 282,719.12, 390,155.36 and 153,657.56

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Solution

The fourth proportional to 282,719.12, 390,155.36 and 153,657.56 is: 212,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,719.12 : 390,155.36 = 153,657.56 : x
  2. Step 2: Convert to fraction form
    282,719.12/390,155.36 = 153,657.56/x
  3. Step 3: Cross multiply
    282,719.12x = 390,155.36 × 153,657.56
  4. Step 4: Simplify right side
    282,719.12x = 59,950,320,638.52
  5. Step 5: Solve for x
    x = 59,950,320,638.52/282,719.12
  6. Step 6: Final answer
    x = 212,049.05

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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.