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Finding the Fourth Proportional to 346,910.64, 520,391.28 and 147,208.32

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Solution

The fourth proportional to 346,910.64, 520,391.28 and 147,208.32 is: 220,823.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,910.64 : 520,391.28 = 147,208.32 : x
  2. Step 2: Convert to fraction form
    346,910.64/520,391.28 = 147,208.32/x
  3. Step 3: Cross multiply
    346,910.64x = 520,391.28 × 147,208.32
  4. Step 4: Simplify right side
    346,910.64x = 76,605,926,071.45
  5. Step 5: Solve for x
    x = 76,605,926,071.45/346,910.64
  6. Step 6: Final answer
    x = 220,823.22

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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.