Home / 378,364,885.62-522,319,314-221,710,250.58

Finding the Fourth Proportional to 378,364,885.62, 522,319,314 and 221,710,250.58

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Solution

The fourth proportional to 378,364,885.62, 522,319,314 and 221,710,250.58 is: 306,063,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,364,885.62 : 522,319,314 = 221,710,250.58 : x
  2. Step 2: Convert to fraction form
    378,364,885.62/522,319,314 = 221,710,250.58/x
  3. Step 3: Cross multiply
    378,364,885.62x = 522,319,314 × 221,710,250.58
  4. Step 4: Simplify right side
    378,364,885.62x = 115,803,545,989,713,712
  5. Step 5: Solve for x
    x = 115,803,545,989,713,712/378,364,885.62
  6. Step 6: Final answer
    x = 306,063,142.73

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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.