Home / 280,307.81-386,819.38-152,984.32

Finding the Fourth Proportional to 280,307.81, 386,819.38 and 152,984.32

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Solution

The fourth proportional to 280,307.81, 386,819.38 and 152,984.32 is: 211,115.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,307.81 : 386,819.38 = 152,984.32 : x
  2. Step 2: Convert to fraction form
    280,307.81/386,819.38 = 152,984.32/x
  3. Step 3: Cross multiply
    280,307.81x = 386,819.38 × 152,984.32
  4. Step 4: Simplify right side
    280,307.81x = 59,177,298,462.61
  5. Step 5: Solve for x
    x = 59,177,298,462.61/280,307.81
  6. Step 6: Final answer
    x = 211,115.41

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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.