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Finding the Fourth Proportional to 353,926.20, 530,111.70 and 307,270.20

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Solution

The fourth proportional to 353,926.20, 530,111.70 and 307,270.20 is: 460,230.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,926.20 : 530,111.70 = 307,270.20 : x
  2. Step 2: Convert to fraction form
    353,926.20/530,111.70 = 307,270.20/x
  3. Step 3: Cross multiply
    353,926.20x = 530,111.70 × 307,270.20
  4. Step 4: Simplify right side
    353,926.20x = 162,887,528,081.34
  5. Step 5: Solve for x
    x = 162,887,528,081.34/353,926.20
  6. Step 6: Final answer
    x = 460,230.21

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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.