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Finding the Fourth Proportional to 426,701.30, 640,049.64 and 173,980.81

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Solution

The fourth proportional to 426,701.30, 640,049.64 and 173,980.81 is: 260,970.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,701.30 : 640,049.64 = 173,980.81 : x
  2. Step 2: Convert to fraction form
    426,701.30/640,049.64 = 173,980.81/x
  3. Step 3: Cross multiply
    426,701.30x = 640,049.64 × 173,980.81
  4. Step 4: Simplify right side
    426,701.30x = 111,356,354,807.41
  5. Step 5: Solve for x
    x = 111,356,354,807.41/426,701.30
  6. Step 6: Final answer
    x = 260,970.27

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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.