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Finding the Fourth Proportional to 371,489.73, 512,656.13 and 210,345.03

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Solution

The fourth proportional to 371,489.73, 512,656.13 and 210,345.03 is: 290,276.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,489.73 : 512,656.13 = 210,345.03 : x
  2. Step 2: Convert to fraction form
    371,489.73/512,656.13 = 210,345.03/x
  3. Step 3: Cross multiply
    371,489.73x = 512,656.13 × 210,345.03
  4. Step 4: Simplify right side
    371,489.73x = 107,834,671,492.86
  5. Step 5: Solve for x
    x = 107,834,671,492.86/371,489.73
  6. Step 6: Final answer
    x = 290,276.32

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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.