Home / 209,000,904.64-312,819,018.96-153,654,128.48

Finding the Fourth Proportional to 209,000,904.64, 312,819,018.96 and 153,654,128.48

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Solution

The fourth proportional to 209,000,904.64, 312,819,018.96 and 153,654,128.48 is: 229,979,548.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,000,904.64 : 312,819,018.96 = 153,654,128.48 : x
  2. Step 2: Convert to fraction form
    209,000,904.64/312,819,018.96 = 153,654,128.48/x
  3. Step 3: Cross multiply
    209,000,904.64x = 312,819,018.96 × 153,654,128.48
  4. Step 4: Simplify right side
    209,000,904.64x = 48,065,933,730,267,392
  5. Step 5: Solve for x
    x = 48,065,933,730,267,392/209,000,904.64
  6. Step 6: Final answer
    x = 229,979,548.72

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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.