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Finding the Fourth Proportional to 289,000.70, 433,501.05 and 155,812.40

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Solution

The fourth proportional to 289,000.70, 433,501.05 and 155,812.40 is: 233,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,000.70 : 433,501.05 = 155,812.40 : x
  2. Step 2: Convert to fraction form
    289,000.70/433,501.05 = 155,812.40/x
  3. Step 3: Cross multiply
    289,000.70x = 433,501.05 × 155,812.40
  4. Step 4: Simplify right side
    289,000.70x = 67,544,839,003.02
  5. Step 5: Solve for x
    x = 67,544,839,003.02/289,000.70
  6. Step 6: Final answer
    x = 233,718.60

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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.