Home / 282,693.12-390,101.76-155,385.60

Finding the Fourth Proportional to 282,693.12, 390,101.76 and 155,385.60

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Solution

The fourth proportional to 282,693.12, 390,101.76 and 155,385.60 is: 214,424.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,693.12 : 390,101.76 = 155,385.60 : x
  2. Step 2: Convert to fraction form
    282,693.12/390,101.76 = 155,385.60/x
  3. Step 3: Cross multiply
    282,693.12x = 390,101.76 × 155,385.60
  4. Step 4: Simplify right side
    282,693.12x = 60,616,196,038.66
  5. Step 5: Solve for x
    x = 60,616,196,038.66/282,693.12
  6. Step 6: Final answer
    x = 214,424.02

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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.