Home / 282,828.60-390,293.48-155,503.20

Finding the Fourth Proportional to 282,828.60, 390,293.48 and 155,503.20

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Solution

The fourth proportional to 282,828.60, 390,293.48 and 155,503.20 is: 214,588.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,828.60 : 390,293.48 = 155,503.20 : x
  2. Step 2: Convert to fraction form
    282,828.60/390,293.48 = 155,503.20/x
  3. Step 3: Cross multiply
    282,828.60x = 390,293.48 × 155,503.20
  4. Step 4: Simplify right side
    282,828.60x = 60,691,885,079.14
  5. Step 5: Solve for x
    x = 60,691,885,079.14/282,828.60
  6. Step 6: Final answer
    x = 214,588.92

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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.