Home / 387,387.48-579,831.30-200,141.40

Finding the Fourth Proportional to 387,387.48, 579,831.30 and 200,141.40

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Solution

The fourth proportional to 387,387.48, 579,831.30 and 200,141.40 is: 299,566.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,387.48 : 579,831.30 = 200,141.40 : x
  2. Step 2: Convert to fraction form
    387,387.48/579,831.30 = 200,141.40/x
  3. Step 3: Cross multiply
    387,387.48x = 579,831.30 × 200,141.40
  4. Step 4: Simplify right side
    387,387.48x = 116,048,248,145.82
  5. Step 5: Solve for x
    x = 116,048,248,145.82/387,387.48
  6. Step 6: Final answer
    x = 299,566.34

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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.