Home / 405,233.16-607,306.40-315,384.36

Finding the Fourth Proportional to 405,233.16, 607,306.40 and 315,384.36

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Solution

The fourth proportional to 405,233.16, 607,306.40 and 315,384.36 is: 472,653.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,233.16 : 607,306.40 = 315,384.36 : x
  2. Step 2: Convert to fraction form
    405,233.16/607,306.40 = 315,384.36/x
  3. Step 3: Cross multiply
    405,233.16x = 607,306.40 × 315,384.36
  4. Step 4: Simplify right side
    405,233.16x = 191,534,940,287.90
  5. Step 5: Solve for x
    x = 191,534,940,287.90/405,233.16
  6. Step 6: Final answer
    x = 472,653.67

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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.