Home / 212,004,946.80-317,615,509.80-120,857,785.20

Finding the Fourth Proportional to 212,004,946.80, 317,615,509.80 and 120,857,785.20

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Solution

The fourth proportional to 212,004,946.80, 317,615,509.80 and 120,857,785.20 is: 181,063,261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,004,946.80 : 317,615,509.80 = 120,857,785.20 : x
  2. Step 2: Convert to fraction form
    212,004,946.80/317,615,509.80 = 120,857,785.20/x
  3. Step 3: Cross multiply
    212,004,946.80x = 317,615,509.80 × 120,857,785.20
  4. Step 4: Simplify right side
    212,004,946.80x = 38,386,307,059,596,896
  5. Step 5: Solve for x
    x = 38,386,307,059,596,896/212,004,946.80
  6. Step 6: Final answer
    x = 181,063,261.21

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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.