Home / 282,815.76-390,280.50-155,488.62

Finding the Fourth Proportional to 282,815.76, 390,280.50 and 155,488.62

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Solution

The fourth proportional to 282,815.76, 390,280.50 and 155,488.62 is: 214,571.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,815.76 : 390,280.50 = 155,488.62 : x
  2. Step 2: Convert to fraction form
    282,815.76/390,280.50 = 155,488.62/x
  3. Step 3: Cross multiply
    282,815.76x = 390,280.50 × 155,488.62
  4. Step 4: Simplify right side
    282,815.76x = 60,684,176,357.91
  5. Step 5: Solve for x
    x = 60,684,176,357.91/282,815.76
  6. Step 6: Final answer
    x = 214,571.41

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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.