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Finding the Fourth Proportional to 510,401.35, 765,718.21 and 155,443.05

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Solution

The fourth proportional to 510,401.35, 765,718.21 and 155,443.05 is: 233,199.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,401.35 : 765,718.21 = 155,443.05 : x
  2. Step 2: Convert to fraction form
    510,401.35/765,718.21 = 155,443.05/x
  3. Step 3: Cross multiply
    510,401.35x = 765,718.21 × 155,443.05
  4. Step 4: Simplify right side
    510,401.35x = 119,025,574,197.24
  5. Step 5: Solve for x
    x = 119,025,574,197.24/510,401.35
  6. Step 6: Final answer
    x = 233,199.96

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Double scale
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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.