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Finding the Fourth Proportional to 255,409.83, 383,113.62 and 77,916.24

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Solution

The fourth proportional to 255,409.83, 383,113.62 and 77,916.24 is: 116,874.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,409.83 : 383,113.62 = 77,916.24 : x
  2. Step 2: Convert to fraction form
    255,409.83/383,113.62 = 77,916.24/x
  3. Step 3: Cross multiply
    255,409.83x = 383,113.62 × 77,916.24
  4. Step 4: Simplify right side
    255,409.83x = 29,850,772,763.19
  5. Step 5: Solve for x
    x = 29,850,772,763.19/255,409.83
  6. Step 6: Final answer
    x = 116,874.02

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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.