Home / 319,604,428.88-478,021,722.53-188,133,380.72

Finding the Fourth Proportional to 319,604,428.88, 478,021,722.53 and 188,133,380.72

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Solution

The fourth proportional to 319,604,428.88, 478,021,722.53 and 188,133,380.72 is: 281,384,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,604,428.88 : 478,021,722.53 = 188,133,380.72 : x
  2. Step 2: Convert to fraction form
    319,604,428.88/478,021,722.53 = 188,133,380.72/x
  3. Step 3: Cross multiply
    319,604,428.88x = 478,021,722.53 × 188,133,380.72
  4. Step 4: Simplify right side
    319,604,428.88x = 89,931,842,713,835,920
  5. Step 5: Solve for x
    x = 89,931,842,713,835,920/319,604,428.88
  6. Step 6: Final answer
    x = 281,384,845.10

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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.