Home / 387,297.07-534,459.27-215,210.59

Finding the Fourth Proportional to 387,297.07, 534,459.27 and 215,210.59

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Solution

The fourth proportional to 387,297.07, 534,459.27 and 215,210.59 is: 296,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,297.07 : 534,459.27 = 215,210.59 : x
  2. Step 2: Convert to fraction form
    387,297.07/534,459.27 = 215,210.59/x
  3. Step 3: Cross multiply
    387,297.07x = 534,459.27 × 215,210.59
  4. Step 4: Simplify right side
    387,297.07x = 115,021,294,827.67
  5. Step 5: Solve for x
    x = 115,021,294,827.67/387,297.07
  6. Step 6: Final answer
    x = 296,984.68

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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.