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Finding the Fourth Proportional to 340,381.36, 469,730.08 and 189,478.32

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Solution

The fourth proportional to 340,381.36, 469,730.08 and 189,478.32 is: 261,482.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,381.36 : 469,730.08 = 189,478.32 : x
  2. Step 2: Convert to fraction form
    340,381.36/469,730.08 = 189,478.32/x
  3. Step 3: Cross multiply
    340,381.36x = 469,730.08 × 189,478.32
  4. Step 4: Simplify right side
    340,381.36x = 89,003,666,411.87
  5. Step 5: Solve for x
    x = 89,003,666,411.87/340,381.36
  6. Step 6: Final answer
    x = 261,482.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.