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Finding the Fourth Proportional to 343,003.61, 512,058.38 and 320,209.73

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Solution

The fourth proportional to 343,003.61, 512,058.38 and 320,209.73 is: 478,030.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,003.61 : 512,058.38 = 320,209.73 : x
  2. Step 2: Convert to fraction form
    343,003.61/512,058.38 = 320,209.73/x
  3. Step 3: Cross multiply
    343,003.61x = 512,058.38 × 320,209.73
  4. Step 4: Simplify right side
    343,003.61x = 163,966,071,442.70
  5. Step 5: Solve for x
    x = 163,966,071,442.70/343,003.61
  6. Step 6: Final answer
    x = 478,030.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.