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Finding the Fourth Proportional to 343,003.67, 512,058.47 and 320,209.79

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Solution

The fourth proportional to 343,003.67, 512,058.47 and 320,209.79 is: 478,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,003.67 : 512,058.47 = 320,209.79 : x
  2. Step 2: Convert to fraction form
    343,003.67/512,058.47 = 320,209.79/x
  3. Step 3: Cross multiply
    343,003.67x = 512,058.47 × 320,209.79
  4. Step 4: Simplify right side
    343,003.67x = 163,966,130,985.08
  5. Step 5: Solve for x
    x = 163,966,130,985.08/343,003.67
  6. Step 6: Final answer
    x = 478,030.25

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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.