Home / 307,256.32-424,021.48-171,312.40

Finding the Fourth Proportional to 307,256.32, 424,021.48 and 171,312.40

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Solution

The fourth proportional to 307,256.32, 424,021.48 and 171,312.40 is: 236,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,256.32 : 424,021.48 = 171,312.40 : x
  2. Step 2: Convert to fraction form
    307,256.32/424,021.48 = 171,312.40/x
  3. Step 3: Cross multiply
    307,256.32x = 424,021.48 × 171,312.40
  4. Step 4: Simplify right side
    307,256.32x = 72,640,137,390.35
  5. Step 5: Solve for x
    x = 72,640,137,390.35/307,256.32
  6. Step 6: Final answer
    x = 236,415.44

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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.