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Finding the Fourth Proportional to 375,628,700.75, 563,443,068.64 and 257,336,815.90

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Solution

The fourth proportional to 375,628,700.75, 563,443,068.64 and 257,336,815.90 is: 386,005,235.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,628,700.75 : 563,443,068.64 = 257,336,815.90 : x
  2. Step 2: Convert to fraction form
    375,628,700.75/563,443,068.64 = 257,336,815.90/x
  3. Step 3: Cross multiply
    375,628,700.75x = 563,443,068.64 × 257,336,815.90
  4. Step 4: Simplify right side
    375,628,700.75x = 144,994,645,220,638,848
  5. Step 5: Solve for x
    x = 144,994,645,220,638,848/375,628,700.75
  6. Step 6: Final answer
    x = 386,005,235.84

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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.