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Finding the Fourth Proportional to 565,720.40, 848,561.40 and 145,000.40

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Solution

The fourth proportional to 565,720.40, 848,561.40 and 145,000.40 is: 217,495.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,720.40 : 848,561.40 = 145,000.40 : x
  2. Step 2: Convert to fraction form
    565,720.40/848,561.40 = 145,000.40/x
  3. Step 3: Cross multiply
    565,720.40x = 848,561.40 × 145,000.40
  4. Step 4: Simplify right side
    565,720.40x = 123,041,742,424.56
  5. Step 5: Solve for x
    x = 123,041,742,424.56/565,720.40
  6. Step 6: Final answer
    x = 217,495.68

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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.