Home / 282,752.21-390,188.16-155,426.88

Finding the Fourth Proportional to 282,752.21, 390,188.16 and 155,426.88

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Solution

The fourth proportional to 282,752.21, 390,188.16 and 155,426.88 is: 214,483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,752.21 : 390,188.16 = 155,426.88 : x
  2. Step 2: Convert to fraction form
    282,752.21/390,188.16 = 155,426.88/x
  3. Step 3: Cross multiply
    282,752.21x = 390,188.16 × 155,426.88
  4. Step 4: Simplify right side
    282,752.21x = 60,645,728,321.74
  5. Step 5: Solve for x
    x = 60,645,728,321.74/282,752.21
  6. Step 6: Final answer
    x = 214,483.66

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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.