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Finding the Fourth Proportional to 478,353, 660,127.14 and 263,492.40

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Solution

The fourth proportional to 478,353, 660,127.14 and 263,492.40 is: 363,619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,353 : 660,127.14 = 263,492.40 : x
  2. Step 2: Convert to fraction form
    478,353/660,127.14 = 263,492.40/x
  3. Step 3: Cross multiply
    478,353x = 660,127.14 × 263,492.40
  4. Step 4: Simplify right side
    478,353x = 173,938,484,423.74
  5. Step 5: Solve for x
    x = 173,938,484,423.74/478,353
  6. Step 6: Final answer
    x = 363,619.51

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1.5x scale

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.