Home / 315,430,031.20-473,145,046.80-100,019,279.20

Finding the Fourth Proportional to 315,430,031.20, 473,145,046.80 and 100,019,279.20

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Solution

The fourth proportional to 315,430,031.20, 473,145,046.80 and 100,019,279.20 is: 150,028,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,430,031.20 : 473,145,046.80 = 100,019,279.20 : x
  2. Step 2: Convert to fraction form
    315,430,031.20/473,145,046.80 = 100,019,279.20/x
  3. Step 3: Cross multiply
    315,430,031.20x = 473,145,046.80 × 100,019,279.20
  4. Step 4: Simplify right side
    315,430,031.20x = 47,323,626,537,986,272
  5. Step 5: Solve for x
    x = 47,323,626,537,986,272/315,430,031.20
  6. Step 6: Final answer
    x = 150,028,918.80

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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.