Home / 209,009,589.40-313,514,384.10-140,134,835.80

Finding the Fourth Proportional to 209,009,589.40, 313,514,384.10 and 140,134,835.80

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Solution

The fourth proportional to 209,009,589.40, 313,514,384.10 and 140,134,835.80 is: 210,202,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,009,589.40 : 313,514,384.10 = 140,134,835.80 : x
  2. Step 2: Convert to fraction form
    209,009,589.40/313,514,384.10 = 140,134,835.80/x
  3. Step 3: Cross multiply
    209,009,589.40x = 313,514,384.10 × 140,134,835.80
  4. Step 4: Simplify right side
    209,009,589.40x = 43,934,286,736,791,640
  5. Step 5: Solve for x
    x = 43,934,286,736,791,640/209,009,589.40
  6. Step 6: Final answer
    x = 210,202,253.70

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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.