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Finding the Fourth Proportional to 357,999.20, 537,011.76 and 121,364.72

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Solution

The fourth proportional to 357,999.20, 537,011.76 and 121,364.72 is: 182,051.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,999.20 : 537,011.76 = 121,364.72 : x
  2. Step 2: Convert to fraction form
    357,999.20/537,011.76 = 121,364.72/x
  3. Step 3: Cross multiply
    357,999.20x = 537,011.76 × 121,364.72
  4. Step 4: Simplify right side
    357,999.20x = 65,174,281,889.11
  5. Step 5: Solve for x
    x = 65,174,281,889.11/357,999.20
  6. Step 6: Final answer
    x = 182,051.47

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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.