Home / 280,943.16-421,217.60-103,427.40

Finding the Fourth Proportional to 280,943.16, 421,217.60 and 103,427.40

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Solution

The fourth proportional to 280,943.16, 421,217.60 and 103,427.40 is: 155,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,943.16 : 421,217.60 = 103,427.40 : x
  2. Step 2: Convert to fraction form
    280,943.16/421,217.60 = 103,427.40/x
  3. Step 3: Cross multiply
    280,943.16x = 421,217.60 × 103,427.40
  4. Step 4: Simplify right side
    280,943.16x = 43,565,441,202.24
  5. Step 5: Solve for x
    x = 43,565,441,202.24/280,943.16
  6. Step 6: Final answer
    x = 155,068.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.