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Finding the Fourth Proportional to 520,746.03, 781,103.93 and 165,781.35

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Solution

The fourth proportional to 520,746.03, 781,103.93 and 165,781.35 is: 248,667.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,746.03 : 781,103.93 = 165,781.35 : x
  2. Step 2: Convert to fraction form
    520,746.03/781,103.93 = 165,781.35/x
  3. Step 3: Cross multiply
    520,746.03x = 781,103.93 × 165,781.35
  4. Step 4: Simplify right side
    520,746.03x = 129,492,463,176.80
  5. Step 5: Solve for x
    x = 129,492,463,176.80/520,746.03
  6. Step 6: Final answer
    x = 248,667.21

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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.