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Finding the Fourth Proportional to 425,000.68, 638,386.35 and 358,570.96

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Solution

The fourth proportional to 425,000.68, 638,386.35 and 358,570.96 is: 538,603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,000.68 : 638,386.35 = 358,570.96 : x
  2. Step 2: Convert to fraction form
    425,000.68/638,386.35 = 358,570.96/x
  3. Step 3: Cross multiply
    425,000.68x = 638,386.35 × 358,570.96
  4. Step 4: Simplify right side
    425,000.68x = 228,906,806,370.40
  5. Step 5: Solve for x
    x = 228,906,806,370.40/425,000.68
  6. Step 6: Final answer
    x = 538,603.39

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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.