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Finding the Fourth Proportional to 488,140.30, 732,866.55 and 311,430.70

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Solution

The fourth proportional to 488,140.30, 732,866.55 and 311,430.70 is: 467,564.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,140.30 : 732,866.55 = 311,430.70 : x
  2. Step 2: Convert to fraction form
    488,140.30/732,866.55 = 311,430.70/x
  3. Step 3: Cross multiply
    488,140.30x = 732,866.55 × 311,430.70
  4. Step 4: Simplify right side
    488,140.30x = 228,237,142,673.09
  5. Step 5: Solve for x
    x = 228,237,142,673.09/488,140.30
  6. Step 6: Final answer
    x = 467,564.64

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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.