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Finding the Fourth Proportional to 306,573.15, 423,107.79 and 185,710.89

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Solution

The fourth proportional to 306,573.15, 423,107.79 and 185,710.89 is: 256,303.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,573.15 : 423,107.79 = 185,710.89 : x
  2. Step 2: Convert to fraction form
    306,573.15/423,107.79 = 185,710.89/x
  3. Step 3: Cross multiply
    306,573.15x = 423,107.79 × 185,710.89
  4. Step 4: Simplify right side
    306,573.15x = 78,575,724,246.83
  5. Step 5: Solve for x
    x = 78,575,724,246.83/306,573.15
  6. Step 6: Final answer
    x = 256,303.35

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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.