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Finding the Fourth Proportional to 355,581.40, 533,372.10 and 328,547.80

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Solution

The fourth proportional to 355,581.40, 533,372.10 and 328,547.80 is: 492,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,581.40 : 533,372.10 = 328,547.80 : x
  2. Step 2: Convert to fraction form
    355,581.40/533,372.10 = 328,547.80/x
  3. Step 3: Cross multiply
    355,581.40x = 533,372.10 × 328,547.80
  4. Step 4: Simplify right side
    355,581.40x = 175,238,230,036.38
  5. Step 5: Solve for x
    x = 175,238,230,036.38/355,581.40
  6. Step 6: Final answer
    x = 492,821.70

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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.