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Finding the Fourth Proportional to 405,009.10, 607,513.65 and 155,691.10

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Solution

The fourth proportional to 405,009.10, 607,513.65 and 155,691.10 is: 233,536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,009.10 : 607,513.65 = 155,691.10 : x
  2. Step 2: Convert to fraction form
    405,009.10/607,513.65 = 155,691.10/x
  3. Step 3: Cross multiply
    405,009.10x = 607,513.65 × 155,691.10
  4. Step 4: Simplify right side
    405,009.10x = 94,584,468,433.52
  5. Step 5: Solve for x
    x = 94,584,468,433.52/405,009.10
  6. Step 6: Final answer
    x = 233,536.65

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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.