Home / 419,140.32-578,242.80-257,946.72

Finding the Fourth Proportional to 419,140.32, 578,242.80 and 257,946.72

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Solution

The fourth proportional to 419,140.32, 578,242.80 and 257,946.72 is: 355,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,140.32 : 578,242.80 = 257,946.72 : x
  2. Step 2: Convert to fraction form
    419,140.32/578,242.80 = 257,946.72/x
  3. Step 3: Cross multiply
    419,140.32x = 578,242.80 × 257,946.72
  4. Step 4: Simplify right side
    419,140.32x = 149,155,833,623.62
  5. Step 5: Solve for x
    x = 149,155,833,623.62/419,140.32
  6. Step 6: Final answer
    x = 355,861.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.