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Finding the Fourth Proportional to 346,688.70, 520,033.05 and 307,290.30

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Solution

The fourth proportional to 346,688.70, 520,033.05 and 307,290.30 is: 460,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,688.70 : 520,033.05 = 307,290.30 : x
  2. Step 2: Convert to fraction form
    346,688.70/520,033.05 = 307,290.30/x
  3. Step 3: Cross multiply
    346,688.70x = 520,033.05 × 307,290.30
  4. Step 4: Simplify right side
    346,688.70x = 159,801,111,944.42
  5. Step 5: Solve for x
    x = 159,801,111,944.42/346,688.70
  6. Step 6: Final answer
    x = 460,935.45

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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.