Home / 380,415.40-524,989.08-210,649.52

Finding the Fourth Proportional to 380,415.40, 524,989.08 and 210,649.52

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Solution

The fourth proportional to 380,415.40, 524,989.08 and 210,649.52 is: 290,705.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,415.40 : 524,989.08 = 210,649.52 : x
  2. Step 2: Convert to fraction form
    380,415.40/524,989.08 = 210,649.52/x
  3. Step 3: Cross multiply
    380,415.40x = 524,989.08 × 210,649.52
  4. Step 4: Simplify right side
    380,415.40x = 110,588,699,019.71
  5. Step 5: Solve for x
    x = 110,588,699,019.71/380,415.40
  6. Step 6: Final answer
    x = 290,705.11

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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.