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Finding the Fourth Proportional to 378,332.23, 522,005.65 and 249,256.39

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Solution

The fourth proportional to 378,332.23, 522,005.65 and 249,256.39 is: 343,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,332.23 : 522,005.65 = 249,256.39 : x
  2. Step 2: Convert to fraction form
    378,332.23/522,005.65 = 249,256.39/x
  3. Step 3: Cross multiply
    378,332.23x = 522,005.65 × 249,256.39
  4. Step 4: Simplify right side
    378,332.23x = 130,113,243,878.60
  5. Step 5: Solve for x
    x = 130,113,243,878.60/378,332.23
  6. Step 6: Final answer
    x = 343,912.66

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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.