Home / 314,930,779.20-472,396,168.80-142,413,220.80

Finding the Fourth Proportional to 314,930,779.20, 472,396,168.80 and 142,413,220.80

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Solution

The fourth proportional to 314,930,779.20, 472,396,168.80 and 142,413,220.80 is: 213,619,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,930,779.20 : 472,396,168.80 = 142,413,220.80 : x
  2. Step 2: Convert to fraction form
    314,930,779.20/472,396,168.80 = 142,413,220.80/x
  3. Step 3: Cross multiply
    314,930,779.20x = 472,396,168.80 × 142,413,220.80
  4. Step 4: Simplify right side
    314,930,779.20x = 67,275,459,892,388,480
  5. Step 5: Solve for x
    x = 67,275,459,892,388,480/314,930,779.20
  6. Step 6: Final answer
    x = 213,619,831.20

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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.