Home / 385,577,280.40-532,111,903.80-216,032,980.72

Finding the Fourth Proportional to 385,577,280.40, 532,111,903.80 and 216,032,980.72

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Solution

The fourth proportional to 385,577,280.40, 532,111,903.80 and 216,032,980.72 is: 298,134,061.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,577,280.40 : 532,111,903.80 = 216,032,980.72 : x
  2. Step 2: Convert to fraction form
    385,577,280.40/532,111,903.80 = 216,032,980.72/x
  3. Step 3: Cross multiply
    385,577,280.40x = 532,111,903.80 × 216,032,980.72
  4. Step 4: Simplify right side
    385,577,280.40x = 114,953,720,654,507,904
  5. Step 5: Solve for x
    x = 114,953,720,654,507,904/385,577,280.40
  6. Step 6: Final answer
    x = 298,134,061.57

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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.