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Finding the Fourth Proportional to 508,718.30, 763,186.80 and 153,768.20

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Solution

The fourth proportional to 508,718.30, 763,186.80 and 153,768.20 is: 230,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,718.30 : 763,186.80 = 153,768.20 : x
  2. Step 2: Convert to fraction form
    508,718.30/763,186.80 = 153,768.20/x
  3. Step 3: Cross multiply
    508,718.30x = 763,186.80 × 153,768.20
  4. Step 4: Simplify right side
    508,718.30x = 117,353,860,499.76
  5. Step 5: Solve for x
    x = 117,353,860,499.76/508,718.30
  6. Step 6: Final answer
    x = 230,685.35

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1.5x scale

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.