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Finding the Fourth Proportional to 353,689.02, 530,434.71 and 140,360.94

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Solution

The fourth proportional to 353,689.02, 530,434.71 and 140,360.94 is: 210,502.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,689.02 : 530,434.71 = 140,360.94 : x
  2. Step 2: Convert to fraction form
    353,689.02/530,434.71 = 140,360.94/x
  3. Step 3: Cross multiply
    353,689.02x = 530,434.71 × 140,360.94
  4. Step 4: Simplify right side
    353,689.02x = 74,452,314,504.23
  5. Step 5: Solve for x
    x = 74,452,314,504.23/353,689.02
  6. Step 6: Final answer
    x = 210,502.19

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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.