Home / 319,381,436.20-440,749,023.78-176,331,807.40

Finding the Fourth Proportional to 319,381,436.20, 440,749,023.78 and 176,331,807.40

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Solution

The fourth proportional to 319,381,436.20, 440,749,023.78 and 176,331,807.40 is: 243,339,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,381,436.20 : 440,749,023.78 = 176,331,807.40 : x
  2. Step 2: Convert to fraction form
    319,381,436.20/440,749,023.78 = 176,331,807.40/x
  3. Step 3: Cross multiply
    319,381,436.20x = 440,749,023.78 × 176,331,807.40
  4. Step 4: Simplify right side
    319,381,436.20x = 77,718,071,972,912,976
  5. Step 5: Solve for x
    x = 77,718,071,972,912,976/319,381,436.20
  6. Step 6: Final answer
    x = 243,339,352.77

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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.