Home / 289,392,608.16-399,365,431.20-157,235,811.30

Finding the Fourth Proportional to 289,392,608.16, 399,365,431.20 and 157,235,811.30

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Solution

The fourth proportional to 289,392,608.16, 399,365,431.20 and 157,235,811.30 is: 216,987,392.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,392,608.16 : 399,365,431.20 = 157,235,811.30 : x
  2. Step 2: Convert to fraction form
    289,392,608.16/399,365,431.20 = 157,235,811.30/x
  3. Step 3: Cross multiply
    289,392,608.16x = 399,365,431.20 × 157,235,811.30
  4. Step 4: Simplify right side
    289,392,608.16x = 62,794,547,579,906,336
  5. Step 5: Solve for x
    x = 62,794,547,579,906,336/289,392,608.16
  6. Step 6: Final answer
    x = 216,987,392.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.