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Finding the Fourth Proportional to 313,337.90, 470,266.05 and 145,117.10

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Solution

The fourth proportional to 313,337.90, 470,266.05 and 145,117.10 is: 217,795.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,337.90 : 470,266.05 = 145,117.10 : x
  2. Step 2: Convert to fraction form
    313,337.90/470,266.05 = 145,117.10/x
  3. Step 3: Cross multiply
    313,337.90x = 470,266.05 × 145,117.10
  4. Step 4: Simplify right side
    313,337.90x = 68,243,645,404.46
  5. Step 5: Solve for x
    x = 68,243,645,404.46/313,337.90
  6. Step 6: Final answer
    x = 217,795.69

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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.