Home / 255,490.18-383,280.29-105,646.51

Finding the Fourth Proportional to 255,490.18, 383,280.29 and 105,646.51

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Solution

The fourth proportional to 255,490.18, 383,280.29 and 105,646.51 is: 158,488.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,490.18 : 383,280.29 = 105,646.51 : x
  2. Step 2: Convert to fraction form
    255,490.18/383,280.29 = 105,646.51/x
  3. Step 3: Cross multiply
    255,490.18x = 383,280.29 × 105,646.51
  4. Step 4: Simplify right side
    255,490.18x = 40,492,224,990.29
  5. Step 5: Solve for x
    x = 40,492,224,990.29/255,490.18
  6. Step 6: Final answer
    x = 158,488.38

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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.