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Finding the Fourth Proportional to 377,622.90, 521,127.80 and 207,857.02

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Solution

The fourth proportional to 377,622.90, 521,127.80 and 207,857.02 is: 286,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,622.90 : 521,127.80 = 207,857.02 : x
  2. Step 2: Convert to fraction form
    377,622.90/521,127.80 = 207,857.02/x
  3. Step 3: Cross multiply
    377,622.90x = 521,127.80 × 207,857.02
  4. Step 4: Simplify right side
    377,622.90x = 108,320,071,547.16
  5. Step 5: Solve for x
    x = 108,320,071,547.16/377,622.90
  6. Step 6: Final answer
    x = 286,847.20

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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.