Home / 349,831.60-524,747.40-128,186.80

Finding the Fourth Proportional to 349,831.60, 524,747.40 and 128,186.80

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Solution

The fourth proportional to 349,831.60, 524,747.40 and 128,186.80 is: 192,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,831.60 : 524,747.40 = 128,186.80 : x
  2. Step 2: Convert to fraction form
    349,831.60/524,747.40 = 128,186.80/x
  3. Step 3: Cross multiply
    349,831.60x = 524,747.40 × 128,186.80
  4. Step 4: Simplify right side
    349,831.60x = 67,265,690,014.32
  5. Step 5: Solve for x
    x = 67,265,690,014.32/349,831.60
  6. Step 6: Final answer
    x = 192,280.20

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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.