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Finding the Fourth Proportional to 484,805.10, 669,058.59 and 291,271.98

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Solution

The fourth proportional to 484,805.10, 669,058.59 and 291,271.98 is: 401,971.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,805.10 : 669,058.59 = 291,271.98 : x
  2. Step 2: Convert to fraction form
    484,805.10/669,058.59 = 291,271.98/x
  3. Step 3: Cross multiply
    484,805.10x = 669,058.59 × 291,271.98
  4. Step 4: Simplify right side
    484,805.10x = 194,878,020,245.31
  5. Step 5: Solve for x
    x = 194,878,020,245.31/484,805.10
  6. Step 6: Final answer
    x = 401,971.89

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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.