Home / 245,831.90-339,280.65-138,423.06

Finding the Fourth Proportional to 245,831.90, 339,280.65 and 138,423.06

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Solution

The fourth proportional to 245,831.90, 339,280.65 and 138,423.06 is: 191,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,831.90 : 339,280.65 = 138,423.06 : x
  2. Step 2: Convert to fraction form
    245,831.90/339,280.65 = 138,423.06/x
  3. Step 3: Cross multiply
    245,831.90x = 339,280.65 × 138,423.06
  4. Step 4: Simplify right side
    245,831.90x = 46,964,265,771.79
  5. Step 5: Solve for x
    x = 46,964,265,771.79/245,831.90
  6. Step 6: Final answer
    x = 191,042.20

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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.