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Finding the Fourth Proportional to 346,700.80, 520,051.20 and 136,345.60

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Solution

The fourth proportional to 346,700.80, 520,051.20 and 136,345.60 is: 204,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,700.80 : 520,051.20 = 136,345.60 : x
  2. Step 2: Convert to fraction form
    346,700.80/520,051.20 = 136,345.60/x
  3. Step 3: Cross multiply
    346,700.80x = 520,051.20 × 136,345.60
  4. Step 4: Simplify right side
    346,700.80x = 70,906,692,894.72
  5. Step 5: Solve for x
    x = 70,906,692,894.72/346,700.80
  6. Step 6: Final answer
    x = 204,518.40

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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.