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Finding the Fourth Proportional to 405,237.95, 607,856.92 and 155,861.63

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Solution

The fourth proportional to 405,237.95, 607,856.92 and 155,861.63 is: 233,792.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,237.95 : 607,856.92 = 155,861.63 : x
  2. Step 2: Convert to fraction form
    405,237.95/607,856.92 = 155,861.63/x
  3. Step 3: Cross multiply
    405,237.95x = 607,856.92 × 155,861.63
  4. Step 4: Simplify right side
    405,237.95x = 94,741,566,929.04
  5. Step 5: Solve for x
    x = 94,741,566,929.04/405,237.95
  6. Step 6: Final answer
    x = 233,792.44

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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.