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Finding the Fourth Proportional to 328,319, 492,543.32 and 103,714.12

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Solution

The fourth proportional to 328,319, 492,543.32 and 103,714.12 is: 155,591.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,319 : 492,543.32 = 103,714.12 : x
  2. Step 2: Convert to fraction form
    328,319/492,543.32 = 103,714.12/x
  3. Step 3: Cross multiply
    328,319x = 492,543.32 × 103,714.12
  4. Step 4: Simplify right side
    328,319x = 51,083,696,995.68
  5. Step 5: Solve for x
    x = 51,083,696,995.68/328,319
  6. Step 6: Final answer
    x = 155,591.66

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1.5x scale

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.