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Finding the Fourth Proportional to 314,831.80, 472,362.90 and 127,862.20

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Solution

The fourth proportional to 314,831.80, 472,362.90 and 127,862.20 is: 191,840.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,831.80 : 472,362.90 = 127,862.20 : x
  2. Step 2: Convert to fraction form
    314,831.80/472,362.90 = 127,862.20/x
  3. Step 3: Cross multiply
    314,831.80x = 472,362.90 × 127,862.20
  4. Step 4: Simplify right side
    314,831.80x = 60,397,359,592.38
  5. Step 5: Solve for x
    x = 60,397,359,592.38/314,831.80
  6. Step 6: Final answer
    x = 191,840.09

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1.5x scale

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.