Home / 390,928,718.88-539,282,085.12-249,651,434.88

Finding the Fourth Proportional to 390,928,718.88, 539,282,085.12 and 249,651,434.88

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Solution

The fourth proportional to 390,928,718.88, 539,282,085.12 and 249,651,434.88 is: 344,391,547.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,928,718.88 : 539,282,085.12 = 249,651,434.88 : x
  2. Step 2: Convert to fraction form
    390,928,718.88/539,282,085.12 = 249,651,434.88/x
  3. Step 3: Cross multiply
    390,928,718.88x = 539,282,085.12 × 249,651,434.88
  4. Step 4: Simplify right side
    390,928,718.88x = 134,632,546,355,286,288
  5. Step 5: Solve for x
    x = 134,632,546,355,286,288/390,928,718.88
  6. Step 6: Final answer
    x = 344,391,547.24

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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.