Finding the Fourth Proportional to 279,828,456.08, 386,163,784.68 and 156,077,109.68
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Solution
The fourth proportional to 279,828,456.08, 386,163,784.68 and 156,077,109.68 is: 215,386,698.77
Step by Step Solution
- Step 1: Write the proportion equation
279,828,456.08 : 386,163,784.68 = 156,077,109.68 : x - Step 2: Convert to fraction form
279,828,456.08/386,163,784.68 = 156,077,109.68/x - Step 3: Cross multiply
279,828,456.08x = 386,163,784.68 × 156,077,109.68 - Step 4: Simplify right side
279,828,456.08x = 60,271,327,375,944,264 - Step 5: Solve for x
x = 60,271,327,375,944,264/279,828,456.08 - Step 6: Final answer
x = 215,386,698.77
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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.