Home / 315,065.03-472,455.38-90,374.47

Finding the Fourth Proportional to 315,065.03, 472,455.38 and 90,374.47

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Solution

The fourth proportional to 315,065.03, 472,455.38 and 90,374.47 is: 135,520.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,065.03 : 472,455.38 = 90,374.47 : x
  2. Step 2: Convert to fraction form
    315,065.03/472,455.38 = 90,374.47/x
  3. Step 3: Cross multiply
    315,065.03x = 472,455.38 × 90,374.47
  4. Step 4: Simplify right side
    315,065.03x = 42,697,903,610.95
  5. Step 5: Solve for x
    x = 42,697,903,610.95/315,065.03
  6. Step 6: Final answer
    x = 135,520.92

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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.