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Finding the Fourth Proportional to 478,322.64, 660,060.27 and 297,030.74

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Solution

The fourth proportional to 478,322.64, 660,060.27 and 297,030.74 is: 409,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,322.64 : 660,060.27 = 297,030.74 : x
  2. Step 2: Convert to fraction form
    478,322.64/660,060.27 = 297,030.74/x
  3. Step 3: Cross multiply
    478,322.64x = 660,060.27 × 297,030.74
  4. Step 4: Simplify right side
    478,322.64x = 196,058,187,142.40
  5. Step 5: Solve for x
    x = 196,058,187,142.40/478,322.64
  6. Step 6: Final answer
    x = 409,886.91

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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.