Home / 212,859,031.60-319,288,547.40-209,271,804.85

Finding the Fourth Proportional to 212,859,031.60, 319,288,547.40 and 209,271,804.85

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Solution

The fourth proportional to 212,859,031.60, 319,288,547.40 and 209,271,804.85 is: 313,907,707.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,859,031.60 : 319,288,547.40 = 209,271,804.85 : x
  2. Step 2: Convert to fraction form
    212,859,031.60/319,288,547.40 = 209,271,804.85/x
  3. Step 3: Cross multiply
    212,859,031.60x = 319,288,547.40 × 209,271,804.85
  4. Step 4: Simplify right side
    212,859,031.60x = 66,818,090,582,332,768
  5. Step 5: Solve for x
    x = 66,818,090,582,332,768/212,859,031.60
  6. Step 6: Final answer
    x = 313,907,707.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.