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Finding the Fourth Proportional to 405,002.08, 607,503.12 and 316,122.40

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Solution

The fourth proportional to 405,002.08, 607,503.12 and 316,122.40 is: 474,183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,002.08 : 607,503.12 = 316,122.40 : x
  2. Step 2: Convert to fraction form
    405,002.08/607,503.12 = 316,122.40/x
  3. Step 3: Cross multiply
    405,002.08x = 607,503.12 × 316,122.40
  4. Step 4: Simplify right side
    405,002.08x = 192,045,344,301.89
  5. Step 5: Solve for x
    x = 192,045,344,301.89/405,002.08
  6. Step 6: Final answer
    x = 474,183.60

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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.