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Finding the Fourth Proportional to 303,681.80, 455,522.70 and 93,319.40

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Solution

The fourth proportional to 303,681.80, 455,522.70 and 93,319.40 is: 139,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,681.80 : 455,522.70 = 93,319.40 : x
  2. Step 2: Convert to fraction form
    303,681.80/455,522.70 = 93,319.40/x
  3. Step 3: Cross multiply
    303,681.80x = 455,522.70 × 93,319.40
  4. Step 4: Simplify right side
    303,681.80x = 42,509,105,050.38
  5. Step 5: Solve for x
    x = 42,509,105,050.38/303,681.80
  6. Step 6: Final answer
    x = 139,979.10

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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.