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Finding the Fourth Proportional to 371,587.19, 512,773.13 and 210,443.40

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Solution

The fourth proportional to 371,587.19, 512,773.13 and 210,443.40 is: 290,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,587.19 : 512,773.13 = 210,443.40 : x
  2. Step 2: Convert to fraction form
    371,587.19/512,773.13 = 210,443.40/x
  3. Step 3: Cross multiply
    371,587.19x = 512,773.13 × 210,443.40
  4. Step 4: Simplify right side
    371,587.19x = 107,909,720,905.84
  5. Step 5: Solve for x
    x = 107,909,720,905.84/371,587.19
  6. Step 6: Final answer
    x = 290,402.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.