Home / 315,352.61-472,618.20-128,145.25

Finding the Fourth Proportional to 315,352.61, 472,618.20 and 128,145.25

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Solution

The fourth proportional to 315,352.61, 472,618.20 and 128,145.25 is: 192,050.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,352.61 : 472,618.20 = 128,145.25 : x
  2. Step 2: Convert to fraction form
    315,352.61/472,618.20 = 128,145.25/x
  3. Step 3: Cross multiply
    315,352.61x = 472,618.20 × 128,145.25
  4. Step 4: Simplify right side
    315,352.61x = 60,563,776,752.82
  5. Step 5: Solve for x
    x = 60,563,776,752.82/315,352.61
  6. Step 6: Final answer
    x = 192,050.98

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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.