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Finding the Fourth Proportional to 437,622.70, 656,434.05 and 260,038.30

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Solution

The fourth proportional to 437,622.70, 656,434.05 and 260,038.30 is: 390,057.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,622.70 : 656,434.05 = 260,038.30 : x
  2. Step 2: Convert to fraction form
    437,622.70/656,434.05 = 260,038.30/x
  3. Step 3: Cross multiply
    437,622.70x = 656,434.05 × 260,038.30
  4. Step 4: Simplify right side
    437,622.70x = 170,697,994,424.12
  5. Step 5: Solve for x
    x = 170,697,994,424.12/437,622.70
  6. Step 6: Final answer
    x = 390,057.45

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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.