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Finding the Fourth Proportional to 354,210.12, 488,806.80 and 193,065.18

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Solution

The fourth proportional to 354,210.12, 488,806.80 and 193,065.18 is: 266,428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,210.12 : 488,806.80 = 193,065.18 : x
  2. Step 2: Convert to fraction form
    354,210.12/488,806.80 = 193,065.18/x
  3. Step 3: Cross multiply
    354,210.12x = 488,806.80 × 193,065.18
  4. Step 4: Simplify right side
    354,210.12x = 94,371,572,827.22
  5. Step 5: Solve for x
    x = 94,371,572,827.22/354,210.12
  6. Step 6: Final answer
    x = 266,428.22

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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.