Home / 380,085.78-524,522.07-210,319.50

Finding the Fourth Proportional to 380,085.78, 524,522.07 and 210,319.50

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Solution

The fourth proportional to 380,085.78, 524,522.07 and 210,319.50 is: 290,242.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,085.78 : 524,522.07 = 210,319.50 : x
  2. Step 2: Convert to fraction form
    380,085.78/524,522.07 = 210,319.50/x
  3. Step 3: Cross multiply
    380,085.78x = 524,522.07 × 210,319.50
  4. Step 4: Simplify right side
    380,085.78x = 110,317,219,501.37
  5. Step 5: Solve for x
    x = 110,317,219,501.37/380,085.78
  6. Step 6: Final answer
    x = 290,242.95

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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.