Home / 280,389,312.48-386,935,424.64-156,628,907.04

Finding the Fourth Proportional to 280,389,312.48, 386,935,424.64 and 156,628,907.04

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Solution

The fourth proportional to 280,389,312.48, 386,935,424.64 and 156,628,907.04 is: 216,146,871.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,389,312.48 : 386,935,424.64 = 156,628,907.04 : x
  2. Step 2: Convert to fraction form
    280,389,312.48/386,935,424.64 = 156,628,907.04/x
  3. Step 3: Cross multiply
    280,389,312.48x = 386,935,424.64 × 156,628,907.04
  4. Step 4: Simplify right side
    280,389,312.48x = 60,605,272,656,421,480
  5. Step 5: Solve for x
    x = 60,605,272,656,421,480/280,389,312.48
  6. Step 6: Final answer
    x = 216,146,871.36

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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.