Home / 369,313,412.61-509,637,448.83-212,686,421.25

Finding the Fourth Proportional to 369,313,412.61, 509,637,448.83 and 212,686,421.25

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Solution

The fourth proportional to 369,313,412.61, 509,637,448.83 and 212,686,421.25 is: 293,498,587.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,313,412.61 : 509,637,448.83 = 212,686,421.25 : x
  2. Step 2: Convert to fraction form
    369,313,412.61/509,637,448.83 = 212,686,421.25/x
  3. Step 3: Cross multiply
    369,313,412.61x = 509,637,448.83 × 212,686,421.25
  4. Step 4: Simplify right side
    369,313,412.61x = 108,392,965,126,632,704
  5. Step 5: Solve for x
    x = 108,392,965,126,632,704/369,313,412.61
  6. Step 6: Final answer
    x = 293,498,587.99

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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.