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Finding the Fourth Proportional to 423,883.84, 634,264.08 and 255,503.20

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Solution

The fourth proportional to 423,883.84, 634,264.08 and 255,503.20 is: 382,313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,883.84 : 634,264.08 = 255,503.20 : x
  2. Step 2: Convert to fraction form
    423,883.84/634,264.08 = 255,503.20/x
  3. Step 3: Cross multiply
    423,883.84x = 634,264.08 × 255,503.20
  4. Step 4: Simplify right side
    423,883.84x = 162,056,502,085.06
  5. Step 5: Solve for x
    x = 162,056,502,085.06/423,883.84
  6. Step 6: Final answer
    x = 382,313.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.