Home / 287,831.76-397,209.56-160,515.40

Finding the Fourth Proportional to 287,831.76, 397,209.56 and 160,515.40

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Solution

The fourth proportional to 287,831.76, 397,209.56 and 160,515.40 is: 221,512.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,831.76 : 397,209.56 = 160,515.40 : x
  2. Step 2: Convert to fraction form
    287,831.76/397,209.56 = 160,515.40/x
  3. Step 3: Cross multiply
    287,831.76x = 397,209.56 × 160,515.40
  4. Step 4: Simplify right side
    287,831.76x = 63,758,251,407.22
  5. Step 5: Solve for x
    x = 63,758,251,407.22/287,831.76
  6. Step 6: Final answer
    x = 221,512.22

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1.5x scale

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.