Home / 282,678.18-390,186.79-180,977.55

Finding the Fourth Proportional to 282,678.18, 390,186.79 and 180,977.55

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Solution

The fourth proportional to 282,678.18, 390,186.79 and 180,977.55 is: 249,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,678.18 : 390,186.79 = 180,977.55 : x
  2. Step 2: Convert to fraction form
    282,678.18/390,186.79 = 180,977.55/x
  3. Step 3: Cross multiply
    282,678.18x = 390,186.79 × 180,977.55
  4. Step 4: Simplify right side
    282,678.18x = 70,615,047,380.92
  5. Step 5: Solve for x
    x = 70,615,047,380.92/282,678.18
  6. Step 6: Final answer
    x = 249,807.21

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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.