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Finding the Fourth Proportional to 405,113.80, 607,670.70 and 254,866.90

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Solution

The fourth proportional to 405,113.80, 607,670.70 and 254,866.90 is: 382,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,113.80 : 607,670.70 = 254,866.90 : x
  2. Step 2: Convert to fraction form
    405,113.80/607,670.70 = 254,866.90/x
  3. Step 3: Cross multiply
    405,113.80x = 607,670.70 × 254,866.90
  4. Step 4: Simplify right side
    405,113.80x = 154,875,147,529.83
  5. Step 5: Solve for x
    x = 154,875,147,529.83/405,113.80
  6. Step 6: Final answer
    x = 382,300.35

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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.