Home / 309,795.12-427,492.32-173,810.40

Finding the Fourth Proportional to 309,795.12, 427,492.32 and 173,810.40

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Solution

The fourth proportional to 309,795.12, 427,492.32 and 173,810.40 is: 239,844.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,795.12 : 427,492.32 = 173,810.40 : x
  2. Step 2: Convert to fraction form
    309,795.12/427,492.32 = 173,810.40/x
  3. Step 3: Cross multiply
    309,795.12x = 427,492.32 × 173,810.40
  4. Step 4: Simplify right side
    309,795.12x = 74,302,611,136.13
  5. Step 5: Solve for x
    x = 74,302,611,136.13/309,795.12
  6. Step 6: Final answer
    x = 239,844.36

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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.