Home / 319,425.77-440,402.86-210,513.17

Finding the Fourth Proportional to 319,425.77, 440,402.86 and 210,513.17

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Solution

The fourth proportional to 319,425.77, 440,402.86 and 210,513.17 is: 290,241.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,425.77 : 440,402.86 = 210,513.17 : x
  2. Step 2: Convert to fraction form
    319,425.77/440,402.86 = 210,513.17/x
  3. Step 3: Cross multiply
    319,425.77x = 440,402.86 × 210,513.17
  4. Step 4: Simplify right side
    319,425.77x = 92,710,602,135.67
  5. Step 5: Solve for x
    x = 92,710,602,135.67/319,425.77
  6. Step 6: Final answer
    x = 290,241.46

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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.