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Finding the Fourth Proportional to 614,235.81, 921,484.93 and 214,889.61

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Solution

The fourth proportional to 614,235.81, 921,484.93 and 214,889.61 is: 322,380.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,235.81 : 921,484.93 = 214,889.61 : x
  2. Step 2: Convert to fraction form
    614,235.81/921,484.93 = 214,889.61/x
  3. Step 3: Cross multiply
    614,235.81x = 921,484.93 × 214,889.61
  4. Step 4: Simplify right side
    614,235.81x = 198,017,535,970.86
  5. Step 5: Solve for x
    x = 198,017,535,970.86/614,235.81
  6. Step 6: Final answer
    x = 322,380.32

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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.