Home / 287,700.31-397,048.05-166,840.55

Finding the Fourth Proportional to 287,700.31, 397,048.05 and 166,840.55

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Solution

The fourth proportional to 287,700.31, 397,048.05 and 166,840.55 is: 230,252.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,700.31 : 397,048.05 = 166,840.55 : x
  2. Step 2: Convert to fraction form
    287,700.31/397,048.05 = 166,840.55/x
  3. Step 3: Cross multiply
    287,700.31x = 397,048.05 × 166,840.55
  4. Step 4: Simplify right side
    287,700.31x = 66,243,712,218.98
  5. Step 5: Solve for x
    x = 66,243,712,218.98/287,700.31
  6. Step 6: Final answer
    x = 230,252.49

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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.