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Finding the Fourth Proportional to 475,369.83, 656,012.65 and 257,578.45

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Solution

The fourth proportional to 475,369.83, 656,012.65 and 257,578.45 is: 355,459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,369.83 : 656,012.65 = 257,578.45 : x
  2. Step 2: Convert to fraction form
    475,369.83/656,012.65 = 257,578.45/x
  3. Step 3: Cross multiply
    475,369.83x = 656,012.65 × 257,578.45
  4. Step 4: Simplify right side
    475,369.83x = 168,974,721,567.39
  5. Step 5: Solve for x
    x = 168,974,721,567.39/475,369.83
  6. Step 6: Final answer
    x = 355,459.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.