Home / 282,815.60-390,275.55-155,490.21

Finding the Fourth Proportional to 282,815.60, 390,275.55 and 155,490.21

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Solution

The fourth proportional to 282,815.60, 390,275.55 and 155,490.21 is: 214,571.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,815.60 : 390,275.55 = 155,490.21 : x
  2. Step 2: Convert to fraction form
    282,815.60/390,275.55 = 155,490.21/x
  3. Step 3: Cross multiply
    282,815.60x = 390,275.55 × 155,490.21
  4. Step 4: Simplify right side
    282,815.60x = 60,684,027,227.37
  5. Step 5: Solve for x
    x = 60,684,027,227.37/282,815.60
  6. Step 6: Final answer
    x = 214,571.01

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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.