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Finding the Fourth Proportional to 563,622.40, 845,356.80 and 169,638.40

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Solution

The fourth proportional to 563,622.40, 845,356.80 and 169,638.40 is: 254,434.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,622.40 : 845,356.80 = 169,638.40 : x
  2. Step 2: Convert to fraction form
    563,622.40/845,356.80 = 169,638.40/x
  3. Step 3: Cross multiply
    563,622.40x = 845,356.80 × 169,638.40
  4. Step 4: Simplify right side
    563,622.40x = 143,404,974,981.12
  5. Step 5: Solve for x
    x = 143,404,974,981.12/563,622.40
  6. Step 6: Final answer
    x = 254,434.48

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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.