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Finding the Fourth Proportional to 353,547.20, 529,543.20 and 306,891.20

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Solution

The fourth proportional to 353,547.20, 529,543.20 and 306,891.20 is: 459,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,547.20 : 529,543.20 = 306,891.20 : x
  2. Step 2: Convert to fraction form
    353,547.20/529,543.20 = 306,891.20/x
  3. Step 3: Cross multiply
    353,547.20x = 529,543.20 × 306,891.20
  4. Step 4: Simplify right side
    353,547.20x = 162,512,148,099.84
  5. Step 5: Solve for x
    x = 162,512,148,099.84/353,547.20
  6. Step 6: Final answer
    x = 459,661.82

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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.