Home / 434,095.20-651,142.80-256,802.40

Finding the Fourth Proportional to 434,095.20, 651,142.80 and 256,802.40

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Solution

The fourth proportional to 434,095.20, 651,142.80 and 256,802.40 is: 385,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,095.20 : 651,142.80 = 256,802.40 : x
  2. Step 2: Convert to fraction form
    434,095.20/651,142.80 = 256,802.40/x
  3. Step 3: Cross multiply
    434,095.20x = 651,142.80 × 256,802.40
  4. Step 4: Simplify right side
    434,095.20x = 167,215,033,782.72
  5. Step 5: Solve for x
    x = 167,215,033,782.72/434,095.20
  6. Step 6: Final answer
    x = 385,203.60

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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.