Home / 213,506,479.20-319,621,989.60-127,200,460.80

Finding the Fourth Proportional to 213,506,479.20, 319,621,989.60 and 127,200,460.80

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Solution

The fourth proportional to 213,506,479.20, 319,621,989.60 and 127,200,460.80 is: 190,420,752.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,506,479.20 : 319,621,989.60 = 127,200,460.80 : x
  2. Step 2: Convert to fraction form
    213,506,479.20/319,621,989.60 = 127,200,460.80/x
  3. Step 3: Cross multiply
    213,506,479.20x = 319,621,989.60 × 127,200,460.80
  4. Step 4: Simplify right side
    213,506,479.20x = 40,656,064,358,932,808
  5. Step 5: Solve for x
    x = 40,656,064,358,932,808/213,506,479.20
  6. Step 6: Final answer
    x = 190,420,752.15

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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.