Home / 487,075.45-672,165.09-272,215.51

Finding the Fourth Proportional to 487,075.45, 672,165.09 and 272,215.51

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Solution

The fourth proportional to 487,075.45, 672,165.09 and 272,215.51 is: 375,657.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,075.45 : 672,165.09 = 272,215.51 : x
  2. Step 2: Convert to fraction form
    487,075.45/672,165.09 = 272,215.51/x
  3. Step 3: Cross multiply
    487,075.45x = 672,165.09 × 272,215.51
  4. Step 4: Simplify right side
    487,075.45x = 182,973,759,417.72
  5. Step 5: Solve for x
    x = 182,973,759,417.72/487,075.45
  6. Step 6: Final answer
    x = 375,657.94

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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.