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Finding the Fourth Proportional to 478,301.42, 660,031.04 and 297,009.45

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Solution

The fourth proportional to 478,301.42, 660,031.04 and 297,009.45 is: 409,857.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,301.42 : 660,031.04 = 297,009.45 : x
  2. Step 2: Convert to fraction form
    478,301.42/660,031.04 = 297,009.45/x
  3. Step 3: Cross multiply
    478,301.42x = 660,031.04 × 297,009.45
  4. Step 4: Simplify right side
    478,301.42x = 196,035,458,565.93
  5. Step 5: Solve for x
    x = 196,035,458,565.93/478,301.42
  6. Step 6: Final answer
    x = 409,857.58

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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.