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Finding the Fourth Proportional to 316,574.88, 436,875.93 and 187,520.46

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Solution

The fourth proportional to 316,574.88, 436,875.93 and 187,520.46 is: 258,779.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,574.88 : 436,875.93 = 187,520.46 : x
  2. Step 2: Convert to fraction form
    316,574.88/436,875.93 = 187,520.46/x
  3. Step 3: Cross multiply
    316,574.88x = 436,875.93 × 187,520.46
  4. Step 4: Simplify right side
    316,574.88x = 81,923,175,356.53
  5. Step 5: Solve for x
    x = 81,923,175,356.53/316,574.88
  6. Step 6: Final answer
    x = 258,779.77

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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.